public class Leaf {
 		int i = 0;
 		Leaf(int i) {this.i = i;}
 		Leaf increament() {
 			i++;
 			return this;
 		}
 		
 		void print() {System.out.println("i = " + i);}
 		
 		public static void main (String[] args) {
 			Leaf leaf = new Leaf(100);
 			leaf.increament().increament().print();
 		}
 	}